CN110187060A - A kind of cement solidification mud intensity extreme early prediction technique - Google Patents
A kind of cement solidification mud intensity extreme early prediction technique Download PDFInfo
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G01N33/383—Concrete, cement
Abstract
The invention discloses a kind of cement solidification mud intensity extreme early prediction techniques, belong to basement process and sludge solidification field.Gain in strength model of this method based on cement solidification mud under the influence of consideration temperature, by carrying out related preliminary experiment in phase of exploration, determine a series of model fitting parameters unrelated with temperature, proportion, cement solidification mud is sampled in the construction stage later, early strength accelerated test is carried out under the conditions of predetermined high temperature, the intensity value based on middle and advanced stage under strength test value prediction cement solidification sludge construction environment under early stage hot conditions.The method of cement solidification mud intensity extreme early prediction provided by the invention is easy to operate, accuracy is high, middle and advanced stage prediction of strength can be carried out in construction early stage, realize the early time quality control of cement solidification mud reclamation work, guiding construction scene adjusting and optimizing match ratio as early as possible, it effectively avoids intensive sampling after construction that problem not up to standard is examined to occur, significantly reduces curing agent cost and the later period reinforces expense.
Description
Technical field
The invention belongs to civil engineering, harbor approach engineering, the basement process of engineering etc. of reclaiming fields from the sea and mud to add
Gu field, more particularly, to a kind of cement solidification mud intensity extreme early prediction technique.
Background technique
The construction maintenance of existing harbor approach, the engineerings such as cleaning dilatation of inland river and lake can all generate the dredging silt of flood tide
Mud, the end-o f-pipe -control of such flood tide dredging silt is always a problem for perplexing academia and engineering circles, wherein utilizing cement
It is a kind of effective processing mode that dredging silt is carried out recycling recycling by curing sludge, typically such as by cement solidification
Mud afterwards is built as airport/embankment, depression is smooth and enclose tideland for cultivation make etc. embankments engineering filler, not only can solve sandstone
Etc. the serious deficient quagmire of good filler, while annual dredging silt Disposal bring bad border can also be effectively relieved and ask
Topic is a kind of excellent integrate economic benefits with environmental effect as the process for treating sludge of the whole body.
But in the actual construction process, for the sample of different batches cement solidification dredging silt, mud it is aqueous
There are significant difference, the cement solidification mud strength difference for causing processing to obtain is bigger for rate, grain composition and cement mixing content.And
And since its fill core concrete is high, project amount is big, lesser strength difference can all cause very big influence, will cause when intensity is excessively high
Greatly waste, when intensity deficiency, are excavated or reinforce and will cause bigger waste, and are difficult to realize in engineering, so
The method of quality control of middle and advanced stage cement solidification mud intensity can be predicted in early stage construction stage there is an urgent need to a kind of.
There are mainly two types of existing method of quality control: first is that passing through UCT (unconfined compression
Strength, unconfined compression strength test) measurement cement solidification mud 28d and 91d unconfined compressive strength qu, this side
Method substantially belongs to quality inspection method after work；Second is that passing through Flow Value Test experiment (hereinafter referred to as in engineering early stage
FVT) cement and mud mixture are tested when flowing plastic state, but its verified property of correlative study and advanced stage
Intensity value has no apparent correlativity, i.e., existing method of quality control can not really realize early stage prediction of quality and control
Purpose, therefore be badly in need of find a kind of effective early time quality control new method.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of cement solidification mud intensity is super early
The method of phase prediction, it is intended that preliminary experiment and construction stage according to the gain in strength model of setting, by phase of exploration
The intensity accelerated test that early stage carries out, which is tested, determines model parameter, and then predicts the middle and advanced stage of cement curing sludge under construction environment
Intensity value is conducive to realize that at initial stage construction stage be the intensity value of predictable cement solidification mud middle and advanced stage in early stage
Carry out quality control.
To achieve the above object, according to one aspect of the present invention, a kind of cement solidification mud intensity extreme early is provided
Prediction technique carries out extreme early prediction based on following gain in strength model:
Wherein, qu(t, T) is the unconfined compressive strength of sample when curing age is t under curing temperature T, T0On the basis of support
Protect temperature；t,teRepresenting sample is T in curing temperature0With the time for reaching same intensity when T and being respectively necessary for；Su, k be only with water
Mud, mud type and cement fitting coefficient relevant to the match ratio of mud are fitted based on formula (1) by experiment parameter
It arrives；t0For fitting coefficient relevant to temperature, formula (1) is based in the engineering investigation stage in given curing temperature T0With under T by reality
Parameter fitting is tested to obtain；
η'T、a'TFor the fitting coefficient for considering curing temperature influence, R=8.3144Jmol-1·K-1, R 'a、E′aFor only with
The relevant fitting coefficient of material properties, R 'a、E′aIt is in the engineering investigation stage in given curing temperature T0With under T by experiment parameter
Fitting obtains；qu,ult(T)、qu,ult(T0) curing temperature is respectively indicated as T and T0When cement solidification mud advanced stage it is anti-without lateral confinement
Pressure angle value；
η'T、a'TIt is in the construction stage by by R 'a、E′aExperimental fit result and construction site actual temperature substitute into formula
(2), (3) are calculated,It is bent by carrying out the probe intensity that maintenance experiment obtains under the conditions of accelerated test
Line determines, wherein tTargetIt is the target value of curing age t, TAccelerateIt is the value of curing temperature T under the conditions of accelerated test.
Further, including pre-experiment stage and intensity accelerated test stage, in which:
Pre-experiment stage:
1) carry out preliminary experiment early period in the engineering investigation stage, comprising: take to the mud of construction site pending area
Sample chooses construction water mud according to match ratio curing sludge needed for construction site, multiple preliminary experiment samples is obtained, to preliminary experiment
Sample, which is grouped under at least three condition of different temperatures, carries out thermostatic curing, tests to obtain different maintenances respectively by VST and UCT
At a temperature of full age unconfined compressive strength value qu；
2) q obtained based on gain in strength model, step 1)u(t, T) and its corresponding T, t, T0、te, based on formula (2),
(3) it is fitted and determines R 'a、E′a；Formula (2), (3) are substituted into formula (1) again, under the conditions of solution different mixture ratio, different curing
t0；Wherein, T0It is selected from the temperature condition that step 1) selects；
3) by obtained t under the conditions of different mixture ratio, same curing temperature0Mean value is taken, as the curing temperature condition
Under t0Constant；
The intensity accelerated test stage:
4) when the construction stage starts, the cement mixing sludge mixture of currently processed batch is sampled to obtain multiple acceleration
Test sample, respectively by VST and UCT test to accelerated test sample within a couple of days by way of improving and testing curing temperature
Grouping carries out intensity accelerated test experiment, the R ' that step 2) is determineda、E′a、T0And maintenance when intensity accelerated test experiment
η ' when temperature T substitutes into formula (2), (3) calculate intensity accelerated test experimentT、a'T, then substitute into formula (1) and solve acceleration survey
Have a try the S of sampleu,k；
5) prediction of strength:
Using construction site actual temperature as curing temperature T, the R ' determined with step 2)a、E′a、T0Substitution formula (2),
(3) η ' when intensity accelerated test experiment is calculatedT、a'T, then in conjunction with the determining S of step 4)u, k, according to formula (1) and formula
(4) the full age strength growth curve under the actual temperature of construction site is predicted.
Further, the full age that sample conserves in the step 1) is 28d or 56d, passes through VST experimental test in 7d
Undrained shear strength, by UCT experimental test unconfined compressive strength within each age, then according to UCT test result,
Ratio amendment is carried out to VST trial curve, so that VST trial curve and UCT trial curve conserve section range in 0.5d~7d
The full age unconfined compressive strength value q for being inside farthest overlapped, and then being unifiedu。
Further, in the step 2), a certain temperature is chosen first as fiducial temperature T0, set fiducial temperature T0Under
η'T=1, a 'T=0, by the full age growth curve of the intensity of a certain selected match ratio sample at this temperature according to formula
(1) it is fitted, obtains fitting constant Su、k、t0Value；
Again by fiducial temperature T0Under fitting constant Su, k substitute into formula (1), to the match ratio different curing T condition
Under full age strength increase data be fitted respectively, obtain multiple groups η ' of the match ratio under different curingT、a'T、
t0
Above-mentioned be fitted is repeated to the full age growth curve of the intensity of sample under other different mixture ratios, condition of different temperatures
Journey obtains the multiple groups η ' under the conditions of different mixture ratio, different curingT、a'T、t0, by different groups of other ln (η 'T)1/T0-1/
T data point is plotted under the same coordinate system, is carried out linear fit and is obtained slope value, to acquire Ra', by different groups of other a 'T1/
T0- 1/T data point is plotted under the same coordinate system, is carried out linear fit and is obtained slope value, to acquire E 'a。
Further, t is determined in the step 3)0Match ratio meet the following conditions: mud moisture content and cement are mixed
Measure the control variable as match ratio, fiducial temperature T0Under the conditions of at least prepare 5 groups of different mixture ratios, under the conditions of other temperature T
At least prepare 3 groups of different mixture ratios.
Further, the method that grouping carries out intensity accelerated test experiment in the step 4) are as follows:
Multiple accelerated test samples are grouped according to age to be measured under the conditions of the curing temperature of predetermined accelerated test, simultaneously
It is conserved；When reaching some age to be measured, corresponding accelerated test sample is taken out, and carries out VST test or UCT test,
In:
VST, which is tested, is set to 1d~1.5d maximum curing cycle, executes a VST at predetermined time intervals since being completed sample preparation
Test；UCT, which is tested, is set to 2d~3d maximum curing cycle, executes a UCT test at predetermined time intervals since being completed sample preparation；
Then according to UCT test result, ratio amendment is carried out to VST trial curve, is referring to VST trial curve and UCT trial curve
It is farthest overlapped within the scope of fixed maintenance section, and then obtains cement solidification mud gain in strength song under the conditions of accelerated test
Line.
Further, VST test is set to 1.5d maximum curing cycle in the step 4), and VST intertrial interval is 2h, UCT
Intertrial interval is 0.5d, according to UCT test result, carries out ratio amendment to VST trial curve, tries VST trial curve and UCT
Curve is tested farthest to be overlapped within the scope of 0.5d~1.5d maintenance section.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial to effect
Fruit:
(1) gain in strength model of this method based on cement solidification mud under the influence of consideration temperature, by phase of exploration
Carry out related preliminary experiment, regard temperature, proportion as known test parameter, by parameter fitting mode determine it is a series of with temperature,
Unrelated gain in strength model fitting parameter is matched, is taken later in cement solidification mud of the construction stage to construction site
Sample carries out maintenance and early strength accelerated test under the conditions of predetermined high temperature, realizes based on strength test under early stage hot conditions
Value prediction practice of construction temperature condition is lauched the intensity value of middle and advanced stage under mud curing sludge construction environment.Cement provided by the invention
The method of curing sludge intensity extreme early prediction is primarily adapted for use in extensive cement solidification mud reclamation work, has operation letter
Single, the high advantage of accuracy can carry out middle and advanced stage prediction of strength in construction early stage, realize cement solidification mud reclamation work
Early time quality control, guiding construction scene adjusting and optimizing match ratio as early as possible effectively avoid intensive sampling after construction from examining not
Problem up to standard occurs, and then significantly reduces curing agent cost or later period reinforcing expense.
(2) VST (vane shear test, vane shear test) is a kind of early test means, can be by intensive
Test preferably reflects premature cure trend, but is not suitable for predicting middle and advanced stage intensity；UCT is tested suitable for full age, but
It is substantially to belong to quality inspection method after work, cannot predicts test result in advance, not have predictive ability；The present invention is not straight
The test result for connecting VST and UCT is predicted, but obtains full age using UCT test result amendment VST test result
Intensity curve, and then parameter needed for specific gain in strength model of the invention is fitted, finally utilize gain in strength model
It realizes in the intensity of construction early prediction construction middle and advanced stage, compensates for the defect of the prior art.
(3) middle and advanced stage prediction of strength can be carried out in construction early stage due to the present invention, quality control can be carried out in advance, had
The some influences of strength difference bring caused by avoiding because of moisture content, grain composition, cement mixing content difference are imitated, quality control is reached
The purpose of system.Meanwhile cement solidification mud intensity is predicted using the present invention, it can be timely according to prediction result in early stage
Cement consumption is adjusted, saves cement consumption as much as possible on the basis of guaranteeing quality.Therefore, this method has easy to operate,
Simply controllably, as a result accurately, the advantages that low in cost
(4) recycling recycling has been carried out to mud using cement solidification, the supply that sandstone filler can both be effectively relieved is short
It lacks, also solves the problem that mud throws aside the environmental issue of initiation；
(5) it is convenient to operate, low in cost: only need to choose a small amount of mud sample in the survey and construction stage and carry out cement solidification
Maintenance, obtains overall process age strength growth curve, then the intensity accelerated test in site operation stage is cooperated to test, i.e., predictable
Middle and advanced stage cement solidification mud intensity, with the advantage that other method of quality control are incomparable；
(6) theoretical property is strong, and accuracy is high: the method for quality control such as existing FVT and UCT or imperfect theoretical branch
Support, or without good control precision, in comparison, the present invention has stronger theory support and test data basis, obtains
Prediction of strength resultant error in controlled range, solution that can be better controls precision problem.
Detailed description of the invention
Fig. 1 be under the conditions of A1 group different curing cement solidification mud intensity with the growth matched curve of age；
Fig. 2 is 1/T0- 1/T and ln (η 'T) relation curve；
Fig. 3 is 1/T0- 1/T and a'TRelation curve；
Fig. 4 is short-term (3d) the strength test data and matched curve under the conditions of A1 group accelerated test；
Fig. 5 is the overall process gain in strength prediction curve under A1 group condition of different temperatures and the comparison between measured data；
Fig. 6 is basic schematic diagram of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Cardinal principle of the invention is to carry out extreme early prediction based on following gain in strength model:
Wherein, qu(t, T) is the unconfined compressive strength of sample when curing age is t under curing temperature T, T0On the basis of support
Protect temperature；t,teRepresenting sample is T in curing temperature0With the time for reaching same intensity when T and being respectively necessary for；Su, k be only with water
Mud, mud type and cement fitting coefficient relevant to the match ratio of mud are fitted based on formula (1) by experiment parameter
It arrives；t0For fitting coefficient relevant to temperature, formula (1) is based in the engineering investigation stage in given curing temperature T0With under T by reality
Parameter fitting is tested to obtain；
η'T、a'TFor the fitting coefficient for considering curing temperature influence, R=8.3144Jmol-1·K-1, R 'a、E′aFor only with
The relevant fitting constant of material properties, R 'a、E′aIt is in the engineering investigation stage in given curing temperature T0With under T by experiment parameter
Fitting obtains；qu,ult(T)、qu,ult(T0) curing temperature is respectively indicated as T and T0When cement solidification mud advanced stage it is anti-without lateral confinement
Pressure angle value；
η'T、a'TIt is in the construction stage by by Ra′、Ea' experimental fit result and construction site actual temperature substitute into formula
(2), (3) are calculated,The probe intensity obtained by carrying out maintenance experiment under the conditions of accelerated test
Curve determines, wherein tTargetIt is the target value of curing age t, TAccelerateIt is the value of curing temperature T under the conditions of accelerated test.
In the following, being carried out with a real case to cement solidification mud intensity extreme early prediction technique of the invention more detailed
Introduction.Present case be centering slag cement solidification Nansha mud 28d intensity carry out extreme early prediction, according to the following steps into
Row:
1, phase of exploration carries out preliminary experiment
Regional mud to be processed is sampled in phase of exploration, construction water mud is chosen and carries out sludge solidification, according to normal
Rule process prepares sample, and is packed into VST (vane shear test, vane shear test) test mould and UCT test mould
(for particular number depending on the quantity of age to be measured, each age to be measured needs at least three samples), specific operating condition is shown in Table 1,
Thermostatic curing is carried out under the conditions of 20 DEG C, 30 DEG C, 40 DEG C and 60 DEG C temperature, carries out strength test in time when reaching a certain age to be measured
Test, counts and arranges VST and UCT test result, carries out ratio amendment to VST trial curve, makes VST trial curve and UCT
Trial curve is farthest overlapped within the scope of 0.5d~7d maintenance section, and then it is feeding to obtain multiple groups different mixture ratio, difference
The unconfined compressive strength value of each age sample under the conditions of shield temperature.
1 phase of exploration preliminary experiment VST of table test and UCT operating condition of test table
2, correlated fitting constant is determined
Based on gain in strength model formation (1) used herein, correlated fitting constant is determined.Choose 20 DEG C of curing temperatures
As benchmark curing temperature T0, temperature foh constant η ' at this timeT=1, a'T=0, using Origin software to known to data progress
Parameter fitting (below with A1 group data instance) under the conditions of functional form, can be fitted to obtain one group of fitting constant Su=
278.343, k=0.00305, t0=16.082；By Su=278.343, k=0.00305 substitutes into gain in strength model formation (1),
Using Origin software A1 group data are carried out with the parameter fitting under the conditions of other curing temperatures, obtains corresponding η 'T、a'T、t0；
A2~A5 group test data is repeated the above process, multiple groups η ' is obtainedT、a'T、t0, it is shown in Table 2.
Based on formula (2) and formula (3), different groups of other ln (η ' are drawnT)1/T0- 1/T data point and a 'T1/T0- 1/T number
Strong point carries out linear fit, obtains fitting constant R 'a=9807.7J/mol, E 'a=31259.6J/mol, then find out difference and match
Constant t under the conditions of composition and division in a proportion, same temperature0Average value.
Temperature affection factor η ' under the conditions of 2 different curing of tableT、a'T、t0
3, the intensity accelerated test stage
It is sampled in cement mixing sludge mixture of the construction stage to currently processed batch, is prepared according to old process
Sample is packed into VST test mould and UCT test mould, is placed in 60 DEG C of thermostatic water bath and is conserved.Usual VST test
Maximum T curing cycle acceleration can be set to 1.5d.Since being completed sample preparation, carries out a VST within every 2~4 hours and test (three every time
VST sample, is averaged)；UCT, which is tested, can be set to 2~3d maximum curing cycle, this curing cycle is set as 3d, from sample preparation
Completion starts, and 0.5d, 1d, 1.5d, 2d, 2.5d, 3d execute a UCT test (three UCT samples every time are averaged)；
VST and UCT test result is counted and arranged, ratio amendment is carried out to VST trial curve, tests VST trial curve and UCT bent
Line is farthest overlapped within the scope of 0.5d~1.5d maintenance section.
4, the gain in strength curve under the conditions of intensity accelerated test is drawn
Test data based on the intensity accelerated test stage is fitted by formula (1), wherein η 'T、a'TBy formula (2) and
(3) gained, t are calculated0It is determined by table 2, η 'T=1.635, a'T=1.461, t0=13.236, under the conditions of obtaining 60 DEG C of temperature
A1 group probe intensity growth formula, Fig. 4 are gain in strength curve determined by test data point in 3d, at this time Su=273.410,
K=0.00296.
5, the prediction of strength stage
Construction site temperature value is tested, by R 'a=9807.7J/mol, E 'a=31259.6J/mol substitutes into formula (2), formula (3)
Temperature influences coefficient η 'T、a'T, the gain in strength curve under the conditions of the target temperature of construction site is obtained according to formula (4) prediction.
Fig. 5 indicates the prediction curve and measured value of A1 group sample when construction site target temperature is 20 DEG C, 30 DEG C and 40 DEG C, can by Fig. 5
Know that match result is preferable between prediction curve and measured value of the invention.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of cement solidification mud intensity extreme early prediction technique, which is characterized in that carried out based on following gain in strength model
Extreme early prediction:
Wherein, qu(t, T) is the unconfined compressive strength of sample when curing age is t under curing temperature T, T0On the basis of conserve temperature
Degree；t,teRepresenting sample is T in curing temperature0With the time for reaching same intensity when T and being respectively necessary for；Su, k be only with cement, become silted up
Mud type and cement fitting coefficient relevant to the match ratio of mud are fitted to obtain based on formula (1) by experiment parameter；t0For
Fitting coefficient relevant to temperature is based on formula (1) in the engineering investigation stage in given curing temperature T0With under T by experiment parameter
Fitting obtains；
η'T、a'TFor the fitting coefficient for considering curing temperature influence, R=8.3144Jmol-1·K-1, R 'a、E′aFor only and material
The relevant fitting constant of attribute, R 'a、E′aIt is in the engineering investigation stage in given curing temperature T0It is fitted under T by experiment parameter
It obtains；qu,ult(T)、qu,ult(T0) curing temperature is respectively indicated as T and T0When cement solidification mud advanced stage non-confining strength
Angle value；
η'T、a'TIt is in the construction stage by by R 'a、E′aExperimental fit result and construction site actual temperature substitute into formula (2),
(3) it is calculated,It is true by carrying out the probe intensity curve that maintenance experiment obtains under the conditions of accelerated test
It is fixed, wherein tTargetIt is the target value of curing age t, TAccelerateIt is the value of curing temperature T under the conditions of accelerated test.
2. a kind of cement solidification mud intensity extreme early prediction technique as described in claim 1, which is characterized in that including pre- reality
Test stage and intensity accelerated test stage, in which:
Pre-experiment stage:
1) carry out preliminary experiment early period in the engineering investigation stage, comprising: be sampled, select to the mud of construction site pending area
It takes construction water mud according to match ratio curing sludge needed for construction site, multiple preliminary experiment samples is obtained, to preliminary experiment sample
It is grouped under at least three condition of different temperatures and carries out thermostatic curing, test to obtain different curing by VST and UCT respectively
Full age unconfined compressive strength value q downu；
2) q obtained based on gain in strength model, step 1)u(t, T) and its corresponding T, t, T0、te, it is based on formula (2), (3)
It is fitted and determines R 'a、E′a；Formula (2), (3) are substituted into formula (1) again, solve the t under the conditions of different mixture ratio, different curing0；
Wherein, T0It is selected from the temperature condition that step 1) selects；
3) by obtained t under the conditions of different mixture ratio, same curing temperature0Mean value is taken, as the t under the conditions of the curing temperature0
Constant；
The intensity accelerated test stage:
4) when the construction stage starts, the cement mixing sludge mixture of currently processed batch is sampled to obtain multiple accelerated tests
Sample is respectively grouped accelerated test sample by VST and UCT test within a couple of days by way of improving and testing curing temperature
Intensity accelerated test experiment is carried out, the R ' that step 2) is determineda、E′a、T0And curing temperature when intensity accelerated test experiment
η ' when T substitutes into formula (2), (3) calculate intensity accelerated test experimentT、a'T, then substitute into formula (1) and solve accelerated test examination
The S of sampleu,k；
5) prediction of strength:
Using construction site actual temperature as curing temperature T, the R ' determined with step 2)a、E′a、T0Substitute into formula (2), (3) meter
Calculate the η ' when intensity accelerated test experimentT、a'T, then in conjunction with the determining S of step 4)u, k, it is pre- according to formula (1) and formula (4)
Survey the full age strength growth curve under the actual temperature of construction site.
3. a kind of cement solidification mud intensity extreme early prediction technique according to claim 2, it is characterised in that:
The full age that sample conserves in the step 1) is 28d or 56d, and by VST experimental test, not drain shearing resistance strong in 7d
Degree, then according to UCT test result, is tested VST bent by UCT experimental test unconfined compressive strength within each age
Line carries out ratio amendment, so that VST trial curve and UCT trial curve conserve within the scope of section farthest in 0.5d~7d
It is overlapped, and then the full age unconfined compressive strength value q unifiedu。
4. a kind of cement solidification mud intensity extreme early prediction technique according to claim 2 or 3, it is characterised in that:
In the step 2), a certain temperature is chosen first as fiducial temperature T0, set fiducial temperature T0Lower η 'T=1, a 'T=0,
It is fitted, is obtained according to formula (1) by the full age growth curve of the intensity of a certain selected match ratio sample at this temperature
Fitting constant S outu、k、t0Value；
Again by fiducial temperature T0Under fitting constant Su, k substitute into formula (1), under the conditions of match ratio different curing T
Full age strength increases data and is fitted respectively, obtains multiple groups η ' of the match ratio under different curingT、a'T、t0
Above-mentioned fit procedure is repeated to the full age growth curve of the intensity of sample under other different mixture ratios, condition of different temperatures,
Obtain the multiple groups η ' under the conditions of different mixture ratio, different curingT、a'T、t0, by different groups of other ln (η 'T)~1/T0-1/T
Data point is plotted under the same coordinate system, is carried out linear fit and is obtained slope value, to acquire R 'a, by different groups of other a 'T~
1/T0- 1/T data point is plotted under the same coordinate system, is carried out linear fit and is obtained slope value, to acquire E 'a。
5. a kind of cement solidification mud intensity extreme early prediction technique according to claim 4, it is characterised in that:
T is determined in the step 3)0Match ratio meet the following conditions: using mud moisture content and cement mixing content as match ratio
Control variable, fiducial temperature T0Under the conditions of at least prepare 5 groups of different mixture ratios, at least prepared under the conditions of other temperature T 3 groups difference
Match ratio.
6. a kind of cement solidification mud intensity extreme early prediction technique according to claim 5, it is characterised in that:
The method that grouping carries out intensity accelerated test experiment in the step 4) are as follows:
Multiple accelerated test samples are grouped according to age to be measured under the conditions of the curing temperature of predetermined accelerated test, are carried out simultaneously
Maintenance；When reaching some age to be measured, corresponding accelerated test sample is taken out, and carries out VST test or UCT test, in which:
VST, which is tested, is set to 1d~1.5d maximum curing cycle, executes a VST examination at predetermined time intervals since being completed sample preparation
It tests；UCT, which is tested, is set to 2d~3d maximum curing cycle, executes a UCT test at predetermined time intervals since being completed sample preparation；So
Afterwards according to UCT test result, ratio amendment is carried out to VST trial curve, makes VST trial curve and UCT trial curve specified
Maintenance section within the scope of be farthest overlapped, and then it is bent to obtain cement solidification mud gain in strength under the conditions of accelerated test
Line.
7. a kind of cement solidification mud intensity extreme early prediction technique according to claim 5, it is characterised in that:
VST, which is tested, in the step 4) is set to 1.5d maximum curing cycle, and VST intertrial interval is 2h, and UCT intertrial interval is
0.5d carries out ratio amendment to VST trial curve, VST trial curve and UCT trial curve is made to exist according to UCT test result
It is farthest overlapped within the scope of 0.5d~1.5d maintenance section.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833970A (en) * | 2020-06-18 | 2020-10-27 | 湖北博华自动化系统工程有限公司 | Construction method and application of cement clinker quality characterization parameter prediction model |
| CN113159486A (en) * | 2021-01-19 | 2021-07-23 | 深圳市都信建设监理有限公司 | Electronic prevention and control project quality supervision method and system |
| CN113485114A (en) * | 2021-07-16 | 2021-10-08 | 南京交通职业技术学院 | Intelligent compressive strength-based preferential algorithm and control system for sludge coast dredged soil brick making and application thereof |
| CN113551995A (en) * | 2021-06-29 | 2021-10-26 | 无锡市欧凯电子有限公司 | Hydraulic measurement and control method |
| CN113791107A (en) * | 2021-09-30 | 2021-12-14 | 武汉三源特种建材有限责任公司 | Tailing filling body monitoring method |
| CN116124678A (en) * | 2023-04-20 | 2023-05-16 | 中交（天津）生态环保设计研究院有限公司 | Phase-change dehydration drying monitoring method and monitoring system for dredging sediment of rivers, lakes and reservoirs |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929930A (en) * | 2009-11-11 | 2010-12-29 | 深圳大学 | Method for rapidly predicting 28-day colloidal mortar compression strength of cement |
| CN103674705A (en) * | 2013-12-17 | 2014-03-26 | 深圳大学 | Method for fast predicting compressive strength of cement in 24 hours |
| CN104020046A (en) * | 2014-06-04 | 2014-09-03 | 王卫仑 | Method for estimating compressive strength of concrete in early stage |
| CN104807983A (en) * | 2015-04-23 | 2015-07-29 | 山东大学 | Determination method for elasticity modulus of early-stage concrete |
| US9272953B2 (en) * | 2010-11-30 | 2016-03-01 | Roman Cement, Llc | High early strength cement-SCM blends |
-
2019
- 2019-05-31 CN CN201910472326.7A patent/CN110187060B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929930A (en) * | 2009-11-11 | 2010-12-29 | 深圳大学 | Method for rapidly predicting 28-day colloidal mortar compression strength of cement |
| US9272953B2 (en) * | 2010-11-30 | 2016-03-01 | Roman Cement, Llc | High early strength cement-SCM blends |
| CN103674705A (en) * | 2013-12-17 | 2014-03-26 | 深圳大学 | Method for fast predicting compressive strength of cement in 24 hours |
| CN104020046A (en) * | 2014-06-04 | 2014-09-03 | 王卫仑 | Method for estimating compressive strength of concrete in early stage |
| CN104807983A (en) * | 2015-04-23 | 2015-07-29 | 山东大学 | Determination method for elasticity modulus of early-stage concrete |
Non-Patent Citations (6)
| Title |
|---|
| S. Y. LIU 等: "Assessment of Unconfined Compressive Strength of Cement Stabilized Marine Clay", 《MARINE GEORESOURCES AND GEOTECHNOLOGY》 * |
| Y. T. LU 等: "Accelerated Testing of Cement Treated Singapore Marine Clay Cured under Elevated Temperature", 《GEOCONGRESS 2012》 * |
| 程钰诗: "水泥固化(超)高含水率淤泥强度特性", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 章荣军 等: "低掺量水泥固化高含水率黏土强度特性研究", 《华中科技大学学报（自然科学版）》 * |
| 章荣军 等: "养护温度对水泥固化淤泥强度影响试验研究", 《岩土力学》 * |
| 蔡基伟 等: "以混凝土早期强度推定28d强度研究", 《河南大学学报（自然科学版）》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833970A (en) * | 2020-06-18 | 2020-10-27 | 湖北博华自动化系统工程有限公司 | Construction method and application of cement clinker quality characterization parameter prediction model |
| CN111833970B (en) * | 2020-06-18 | 2023-06-20 | 湖北博华自动化系统工程有限公司 | Cement clinker quality characterization parameter prediction model construction method and application thereof |
| CN113159486A (en) * | 2021-01-19 | 2021-07-23 | 深圳市都信建设监理有限公司 | Electronic prevention and control project quality supervision method and system |
| CN113551995A (en) * | 2021-06-29 | 2021-10-26 | 无锡市欧凯电子有限公司 | Hydraulic measurement and control method |
| CN113551995B (en) * | 2021-06-29 | 2022-04-12 | 无锡市欧凯电子有限公司 | Hydraulic measurement and control method |
| CN113485114A (en) * | 2021-07-16 | 2021-10-08 | 南京交通职业技术学院 | Intelligent compressive strength-based preferential algorithm and control system for sludge coast dredged soil brick making and application thereof |
| CN113485114B (en) * | 2021-07-16 | 2022-01-14 | 南京交通职业技术学院 | Intelligent compressive strength-based preferential algorithm and control system for sludge coast dredged soil brick making and application thereof |
| CN113791107A (en) * | 2021-09-30 | 2021-12-14 | 武汉三源特种建材有限责任公司 | Tailing filling body monitoring method |
| CN113791107B (en) * | 2021-09-30 | 2023-10-20 | 武汉三源特种建材有限责任公司 | Tailing filling body monitoring method |
| CN116124678A (en) * | 2023-04-20 | 2023-05-16 | 中交（天津）生态环保设计研究院有限公司 | Phase-change dehydration drying monitoring method and monitoring system for dredging sediment of rivers, lakes and reservoirs |
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